Very poweful ARM920T microcontrollers at incredible low cost. Cirrus distributes free of charge Linux and Windows CE port for their microcontrollers.
PLUS:
Fast core runs at up to 200Mhz with MMU, cache memory for instructions and
data.
Low power consumption.
Great range of peripherials like SDRAM build-in controller, 8x8 keypad scanner,
IrDa, 1/10/100 Mb Ethernet MAC, USB Hosts, SPI, I2C, I2S, AC97, DMA channels
and so on.
MINUS:
PCB design and routing is more complex due to the higher frequencies ;) Beginers
go away!